Electrodeless panel discharge lamp liquid crystal display

Details Electrodeless panel discharge lamp liquid crystal display Electrodeless panel discharge lamp liquid crystal display

1988-07-22

1989-10-10

Miller, Stanley D.

Electric lamp and discharge devices

With temperature modifier

For lead-in-seal or stem protection

313483, 313485, 313491, 313161, 313607, G02F 113

Patent

active

048727415

ABSTRACT:
A light transmissive liquid crystal display is illuminated from its rear surface by a juxtaposed flat electrodeless discharge lamp. The lamp includes a pair of glass plates sealably enclosing a fill gas. The front plate carries a phosphor coating on its interior surface and the rear plate carries a phosphor coating and a reflective film. A rectangular array of RF coils behind the rear plate provides excitation for a plasma arc discharge within the fill gas whereby adjacent discharge current paths counter rotate. Ultraviolet radiation emitted by the plasma arc discharge excites the phosphor which produces visible light of uniform brightness that may be varied by varying the RF current amplitude in the coils.

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